Rehability rhymes with:
ability, acceptability, adaptability, admissibility, affordability, amiability, applicability, availability, capability, combinability, compatibility, comprehensibility, debility, deductibility, electability, feasibility, flexibility, inaccessibility, invisibility, irresponsibility, irritability, legibility, malleability, overwhelmability, palatability, possibility, probability, reliability, responsibility, susceptibility, viability
Rehability sounds like:
rabold, raffield, raphaelite, rappold, raveled, raybould, rayfield, rebelled, rebuild, rebuilt, reevaluate, reevaluated, refiled, refilled, reflate, refueled, rehabilitate, rehabilitated, rehfeld, rehfeldt, repealed, repelled, replayed, replete, replied, revalued, revealed, reveled, reviled, revolt, revolted, revuelta, ribald, rifled, rippled, rivaled, robledo, ruffled, rybolt